Removal & Installation
Dust and dirt accumulating on brake parts during normal use may contain asbestos fibers from production or aftermarket brake linings. Breathing excessive concentrations of asbestos fibers can cause serious bodily harm. Exercise care when servicing brake parts. Do not sand or grind brake lining unless equipment used is designed to contain the dust residue. Do not clean brake parts with compressed air or by dry brushing. Cleaning should be done by dampening the brake components with a fine mist of water, then wiping the brake components clean with a dampened cloth. Dispose of cloth and all residue containing asbestos fibers in an impermeable container with the appropriate label. Follow practices prescribed by the Occupational Safety and Health Administration (OSHA) and the Environmental Protection Agency (EPA) for the handling, processing, and disposing of dust or debris that may contain asbestos fibers.
The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the RH kick panel area. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.
Remove the wheel and tire assembly.
When removing the rear disc brake caliper in this procedure, it is not necessary to disconnect the rear wheel brake hose.
Remove the brake caliper anchor plate bolts.
Never allow the brake caliper to hang by the flexible brake hose.
Remove the anchor plate and caliper as an assembly.
If the brake disc binds on the parking brake shoe, remove the adjustment hole access plug and contract the parking brake shoe.
Remove the brake disc.
If machining is necessary use a hub-mount brake lathe to machine the rear brake disc.
Inspect the brake disc. If it is scored, it must be resurfaced. Also, resurface the rear brake disc if a test drive has identified vibration transmitted through the steering wheel, seat or brake pedal while braking.
Measure the rear brake disc, and resurface as necessary. Install a new rear brake disc if beyond specification.
Fig. Measure the rear brake disc, and resurface as necessary. Install a new rear brake disc if beyond specification
Installation is the reverse of the removal procedure. Tighten the brake caliper anchor bolts to 140 ft. lbs. (190 Nm).